Roller-mill scraper.



A. w. SCHMIDT.

ROLLER MILL SCFIAF'ER. APPLICATION FILD JUNEZIIVISII.

Patented July 16, 1918.

2 SHEETS--SHEET l ll/zzz Zd 67672772 @E5 A. WI SCHMIDT.

ROLLER MILL SCRAPER.

APPLICATION FILED IuNE 21. Ian.

1 ,272,863 Patented July 16, 1918.

2 SHEETS-SHEET 2- UNITED STATES PATENT QFFIQE.

ADOLPHE WM.y SCHMIDT, or LnWIsToN, IDAHO.

ROLLER-MILL SCRAPER.

My invention relates to that class of de-v vices intended to prevent the accumulation of crushed material on the rollers of the socalled roller mills. I am aware that numerous devices have heretofore been devised for this purpose, but all of these devices, in so far as I am advised, have been mounted beneath the rollers and cause considerable trouble whenever it is necessary to gain access thereto for cleaning or other purposes.

It is the principal object of my invention to provide simply constructed and inexpensive scrapers which may be located either on the upper side of the rollers or at any other suitable location other than at the bottom thereof, thus making the devices easily accessible whenever necessary.

With the foregoing general object in view, the invention resides in the novel features of construction and unique combination of parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by the accompanying drawings which form a part of this specification and in which:

Figure 1 is a vertical transverse section of Ya roller mill showing the application of the invention thereto;

Fig. 2 is a horizontal section on the plane of the line 2-2 of Fig. 1;

Fig. 3 is a perspective View of the invention detached from the mill; and

Fig. 4 is a similar view showing more particularly the adjustable connection belt)ween the attaching feet and the scraper ars.

In the drawings above briefly described, the numeral 1 designates a pair of rollers of a common type of roller mill, said rollers being positioned beneath the hopper 2 into which the material to be crushed or rolled is fed. It is the intention of the present device to provide novel means for scraping the material from the rollers 1 so that it will not accumulate thereon? and ,to ,this end l Specication of Letters Patent.

Patented July 16, 1918.

Application filed .Tune 21, 1917. Serial No. 176,241.

employ the features of construction now to be described.

A pair of horizontally elongated supports 3, preferably cast from iron or the like, are secured in any preferred manner to the ends of the rolling chamber Ll, on the interior of the latter, the centers of said supports preferably having longitudinal slots 5 through which bolts yor the like 6 are passed. The ends of the supports 3 are provided with pairs of ears 7 extending longitudinally thereof and receiving therebetween addi- A tional ears 8 on the upper ends of arms 9,

the lower ends of said arms preferably having integral weighted feet 10 which extend laterally therefrom as shown. A pair of scraper bars 11 extend longitudinally on the rollers 1 and are provided at their ends with slots 12 through which fastening screws or other devices 13 pass, said screws or the like being employed for securing the bars 11 adjustably to the feet 10. By connecting the bars 11, by means of the slots 12 and 13 with the feet 10, the device is adjustable for use in connection with rolling mills having rollers of different lengths.

When installing the invention, the supports 3 are secured by the bolts 6 or other suitable fastening means, to the ends of the rolling chamber 4, on the interior of the latter, the arms 9 then depending from the ends of said supports as will be clear from Figs. 1 and`2. When in this position, the arms 9 support the scraper bars 11 either on opposite sides of a pair of co-acting rollers as shown in Fig. 1 or on the opposed sides of a single roller. If the last named arrangement is employed, two sets of scraper bars will be employed for every coacting pair of rollers. It will be observed that the bars 11 contact with the rollers 1 at such points as to permit them to be readily accessible in case the cleaning thereof should be necessary, or if repairs need be made. For these reasons, the improved construction is much more advantageous than any previously employed.

From the foregoing, with the accompanying drawings, it will be obvious that although the invention is of comparatively simple and inexpensive nature, it will be highly eiicient and durable. Since probably the best results are obtained from the specific construction shown and described, such construction constitutes the Apreferred form of the improved scraper,l I

taken in connection of arched end: members havingver-ticall)l` movable ends, means fory securing` the central portions of said members to the ends of the crushingrchamberof the roller. mill, and

roller scraping bars secured at their ends tol.

said vertially. movable ends of said end members 2, A roller mill scraper comprising a pair, of. arched, end members each formed of a central: and, two end sections, said central sectionshaving openingsito receive boltsnfor securing; them topfthep. ends., of the crushing. chamber of a roller mill, each. end oi said' cogie Ofjthisfpatent. may. b@` obtainedY for central sections. being increased in Width and formed With a pair of horizontally spaced@l ears,` thesuppen ends of said outer sections having ears received between said pair of"l ears and pivoted thereto, laterally extending flat shoes on the lower* ends of said`r` outer.`v sections, the shoes of. each. end member, extendinggtoward those of the other, roller scraping bars Whose ends Contact with the lower faces of. said(shoes,` andfasteners securing.|said bars and said shoes together.

InA testimony, whereof'v Iha.vcf,l1ereunto set my handin the presence of tvvo subscribing witnesses.

. SCHMITDT.

Wtnessemf I AuGUSr VA-N.DYK NEAL, NELSON.

yecnts each, byl addressinpthe Commissioner of Patents; 

